3 * Laconica - a distributed open-source microblogging tool
4 * Copyright (C) 2008, Controlez-Vous, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 /* XXX: break up into separate modules (HTTP, HTML, user, files) */
24 function common_server_error($msg, $code=500) {
25 static $status = array(500 => 'Internal Server Error',
26 501 => 'Not Implemented',
28 503 => 'Service Unavailable',
29 504 => 'Gateway Timeout',
30 505 => 'HTTP Version Not Supported');
32 if (!array_key_exists($code, $status)) {
36 $status_string = $status[$code];
38 header('HTTP/1.1 '.$code.' '.$status_string);
39 header('Content-type: text/plain');
47 function common_user_error($msg, $code=400) {
48 static $status = array(400 => 'Bad Request',
49 401 => 'Unauthorized',
50 402 => 'Payment Required',
53 405 => 'Method Not Allowed',
54 406 => 'Not Acceptable',
55 407 => 'Proxy Authentication Required',
56 408 => 'Request Timeout',
59 411 => 'Length Required',
60 412 => 'Precondition Failed',
61 413 => 'Request Entity Too Large',
62 414 => 'Request-URI Too Long',
63 415 => 'Unsupported Media Type',
64 416 => 'Requested Range Not Satisfiable',
65 417 => 'Expectation Failed');
67 if (!array_key_exists($code, $status)) {
71 $status_string = $status[$code];
73 header('HTTP/1.1 '.$code.' '.$status_string);
75 common_show_header('Error');
76 common_element('div', array('class' => 'error'), $msg);
82 # Start an HTML element
83 function common_element_start($tag, $attrs=NULL) {
85 $xw->startElement($tag);
86 if (is_array($attrs)) {
87 foreach ($attrs as $name => $value) {
88 $xw->writeAttribute($name, $value);
90 } else if (is_string($attrs)) {
91 $xw->writeAttribute('class', $attrs);
95 function common_element_end($tag) {
96 static $empty_tag = array('base', 'meta', 'link', 'hr',
97 'br', 'param', 'img', 'area',
100 # XXX: check namespace
101 if (in_array($tag, $empty_tag)) {
104 $xw->fullEndElement();
108 function common_element($tag, $attrs=NULL, $content=NULL) {
109 common_element_start($tag, $attrs);
111 if (!is_null($content)) {
114 common_element_end($tag);
117 function common_start_xml($doc=NULL, $public=NULL, $system=NULL, $indent=true) {
119 $xw = new XMLWriter();
120 $xw->openURI('php://output');
121 $xw->setIndent($indent);
122 $xw->startDocument('1.0', 'UTF-8');
124 $xw->writeDTD($doc, $public, $system);
128 function common_end_xml() {
134 function common_init_language() {
135 mb_internal_encoding('UTF-8');
136 $language = common_language();
137 # So we don't have to make people install the gettext locales
138 putenv('LANGUAGE='.$language);
139 putenv('LANG='.$language);
140 $locale_set = setlocale(LC_ALL, $language . ".utf8",
142 $language . ".utf-8",
143 $language . ".UTF-8",
145 bindtextdomain("laconica", common_config('site','locale_path'));
146 bind_textdomain_codeset("laconica", "UTF-8");
147 textdomain("laconica");
148 setlocale(LC_CTYPE, 'C');
150 common_log(LOG_INFO,'Language requested:'.$language.' - locale could not be set:',__FILE__);
154 define('PAGE_TYPE_PREFS', 'text/html,application/xhtml+xml,application/xml;q=0.3,text/xml;q=0.2');
156 function common_show_header($pagetitle, $callable=NULL, $data=NULL, $headercall=NULL) {
162 common_element_start('head');
163 common_element('title', NULL,
164 $pagetitle . " - " . $config['site']['name']);
165 common_element('link', array('rel' => 'stylesheet',
166 'type' => 'text/css',
167 'href' => theme_path('display.css') . '?version=' . LACONICA_VERSION,
168 'media' => 'screen, projection, tv'));
169 foreach (array(6,7) as $ver) {
170 if (file_exists(theme_file('ie'.$ver.'.css'))) {
171 # Yes, IE people should be put in jail.
172 $xw->writeComment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
173 'href="'.theme_path('ie'.$ver.'.css').'?version='.LACONICA_VERSION.'" /><![endif]');
177 common_element('script', array('type' => 'text/javascript',
178 'src' => common_path('js/jquery.min.js')),
180 common_element('script', array('type' => 'text/javascript',
181 'src' => common_path('js/jquery.form.js')),
183 common_element('script', array('type' => 'text/javascript',
184 'src' => common_path('js/xbImportNode.js')),
186 common_element('script', array('type' => 'text/javascript',
187 'src' => common_path('js/util.js?version='.LACONICA_VERSION)),
189 common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
190 'href' => common_local_url('opensearch', array('type' => 'people')),
191 'title' => common_config('site', 'name').' People Search'));
193 common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
194 'href' => common_local_url('opensearch', array('type' => 'notice')),
195 'title' => common_config('site', 'name').' Notice Search'));
199 call_user_func($callable, $data);
201 call_user_func($callable);
204 common_element_end('head');
205 common_element_start('body');
206 common_element_start('div', array('id' => 'wrap'));
207 common_element_start('div', array('id' => 'header'));
209 if ((isset($config['site']['logo']) && is_string($config['site']['logo']) && (strlen($config['site']['logo']) > 0))
210 || file_exists(theme_file('logo.png')))
212 common_element_start('a', array('href' => common_local_url('public')));
213 common_element('img', array('src' => isset($config['site']['logo']) ?
214 ($config['site']['logo']) : theme_path('logo.png'),
215 'alt' => $config['site']['name'],
217 common_element_end('a');
219 common_element_start('p', array('id' => 'branding'));
220 common_element('a', array('href' => common_local_url('public')),
221 $config['site']['name']);
222 common_element_end('p');
225 common_element('h1', 'pagetitle', $pagetitle);
229 call_user_func($headercall, $data);
231 call_user_func($headercall);
234 common_element_end('div');
235 common_element_start('div', array('id' => 'content'));
238 function common_start_html($type=NULL, $indent=true) {
241 $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : NULL;
243 # XXX: allow content negotiation for RDF, RSS, or XRDS
245 $type = common_negotiate_type(common_accept_to_prefs($httpaccept),
246 common_accept_to_prefs(PAGE_TYPE_PREFS));
249 common_user_error(_('This page is not available in a media type you accept'), 406);
254 header('Content-Type: '.$type);
256 common_start_xml('html',
257 '-//W3C//DTD XHTML 1.0 Strict//EN',
258 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd', $indent);
260 # FIXME: correct language for interface
262 $language = common_language();
264 common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
265 'xml:lang' => $language,
266 'lang' => $language));
269 function common_show_footer() {
271 common_element_end('div'); # content div
273 common_element_start('div', array('id' => 'footer'));
274 common_element_start('div', 'laconica');
275 if (common_config('site', 'broughtby')) {
276 $instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
278 $instr = _('**%%site.name%%** is a microblogging service. ');
280 $instr .= sprintf(_('It runs the [Laconica](http://laconi.ca/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), LACONICA_VERSION);
281 $output = common_markup_to_html($instr);
283 common_element_end('div');
284 common_element('img', array('id' => 'cc',
285 'src' => $config['license']['image'],
286 'alt' => $config['license']['title']));
287 common_element_start('p');
288 common_text(_('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
289 common_element('a', array('class' => 'license',
291 'href' => $config['license']['url']),
292 $config['license']['title']);
293 common_text(_('. Contributors should be attributed by full name or nickname.'));
294 common_element_end('p');
295 common_element_end('div');
296 common_element_end('div');
297 common_element_end('body');
298 common_element_end('html');
302 function common_text($txt) {
307 function common_raw($xml) {
312 function common_nav_menu() {
313 $user = common_current_user();
314 common_element_start('ul', array('id' => 'nav'));
316 common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
319 common_menu_item(common_local_url('peoplesearch'), _('Search'));
321 common_menu_item(common_local_url('profilesettings'),
323 common_menu_item(common_local_url('invite'),
325 common_menu_item(common_local_url('logout'),
328 common_menu_item(common_local_url('login'), _('Login'));
329 if (!common_config('site', 'closed')) {
330 common_menu_item(common_local_url('register'), _('Register'));
332 common_menu_item(common_local_url('openidlogin'), _('OpenID'));
334 common_menu_item(common_local_url('doc', array('title' => 'help')),
336 common_element_end('ul');
339 function common_foot_menu() {
340 common_element_start('ul', array('id' => 'nav_sub'));
341 common_menu_item(common_local_url('doc', array('title' => 'help')),
343 common_menu_item(common_local_url('doc', array('title' => 'about')),
345 common_menu_item(common_local_url('doc', array('title' => 'faq')),
347 common_menu_item(common_local_url('doc', array('title' => 'privacy')),
349 common_menu_item(common_local_url('doc', array('title' => 'source')),
351 common_menu_item(common_local_url('doc', array('title' => 'contact')),
353 common_element_end('ul');
356 function common_menu_item($url, $text, $title=NULL, $is_selected=false) {
359 $lattrs['class'] = 'current';
361 common_element_start('li', $lattrs);
362 $attrs['href'] = $url;
364 $attrs['title'] = $title;
366 common_element('a', $attrs, $text);
367 common_element_end('li');
370 function common_input($id, $label, $value=NULL,$instructions=NULL) {
371 common_element_start('p');
372 common_element('label', array('for' => $id), $label);
373 $attrs = array('name' => $id,
375 'class' => 'input_text',
378 $attrs['value'] = htmlspecialchars($value);
380 common_element('input', $attrs);
382 common_element('span', 'input_instructions', $instructions);
384 common_element_end('p');
387 function common_checkbox($id, $label, $checked=false, $instructions=NULL, $value='true', $disabled=false)
389 common_element_start('p');
390 $attrs = array('name' => $id,
391 'type' => 'checkbox',
392 'class' => 'checkbox',
395 $attrs['value'] = htmlspecialchars($value);
398 $attrs['checked'] = 'checked';
401 $attrs['disabled'] = 'true';
403 common_element('input', $attrs);
405 common_element('label', array('class' => 'checkbox_label', 'for' => $id), $label);
408 common_element('span', 'input_instructions', $instructions);
410 common_element_end('p');
413 function common_dropdown($id, $label, $content, $instructions=NULL, $blank_select=FALSE, $selected=NULL) {
414 common_element_start('p');
415 common_element('label', array('for' => $id), $label);
416 common_element_start('select', array('id' => $id, 'name' => $id));
418 common_element('option', array('value' => ''));
420 foreach ($content as $value => $option) {
421 if ($value == $selected) {
422 common_element('option', array('value' => $value, 'selected' => $value), $option);
424 common_element('option', array('value' => $value), $option);
427 common_element_end('select');
429 common_element('span', 'input_instructions', $instructions);
431 common_element_end('p');
433 function common_hidden($id, $value) {
434 common_element('input', array('name' => $id,
440 function common_password($id, $label, $instructions=NULL) {
441 common_element_start('p');
442 common_element('label', array('for' => $id), $label);
443 $attrs = array('name' => $id,
444 'type' => 'password',
445 'class' => 'password',
447 common_element('input', $attrs);
449 common_element('span', 'input_instructions', $instructions);
451 common_element_end('p');
454 function common_submit($id, $label, $cls='submit') {
456 common_element_start('p');
457 common_element('input', array('type' => 'submit',
462 common_element_end('p');
465 function common_textarea($id, $label, $content=NULL, $instructions=NULL) {
466 common_element_start('p');
467 common_element('label', array('for' => $id), $label);
468 common_element('textarea', array('rows' => 3,
472 ($content) ? $content : '');
474 common_element('span', 'input_instructions', $instructions);
476 common_element_end('p');
479 function common_timezone() {
480 if (common_logged_in()) {
481 $user = common_current_user();
482 if ($user->timezone) {
483 return $user->timezone;
488 return $config['site']['timezone'];
491 function common_language() {
493 // If there is a user logged in and they've set a language preference
494 // then return that one...
495 if (common_logged_in()) {
496 $user = common_current_user();
497 $user_language = $user->language;
499 return $user_language;
502 // Otherwise, find the best match for the languages requested by the
504 $httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : NULL;
505 if (!empty($httplang)) {
506 $language = client_prefered_language($httplang);
511 // Finally, if none of the above worked, use the site's default...
512 return common_config('site', 'language');
514 # salted, hashed passwords are stored in the DB
516 function common_munge_password($password, $id) {
517 return md5($password . $id);
520 # check if a username exists and has matching password
521 function common_check_user($nickname, $password) {
522 # NEVER allow blank passwords, even if they match the DB
523 if (mb_strlen($password) == 0) {
526 $user = User::staticGet('nickname', $nickname);
527 if (is_null($user)) {
530 if (0 == strcmp(common_munge_password($password, $user->id),
539 # is the current user logged in?
540 function common_logged_in() {
541 return (!is_null(common_current_user()));
544 function common_have_session() {
545 return (0 != strcmp(session_id(), ''));
548 function common_ensure_session() {
549 if (!common_have_session()) {
554 # Three kinds of arguments:
559 # Initialize to false; set to NULL if none found
563 function common_set_user($user) {
567 if (is_null($user) && common_have_session()) {
569 unset($_SESSION['userid']);
571 } else if (is_string($user)) {
573 $user = User::staticGet('nickname', $nickname);
574 } else if (!($user instanceof User)) {
579 common_ensure_session();
580 $_SESSION['userid'] = $user->id;
587 function common_set_cookie($key, $value, $expiration=0) {
588 $path = common_config('site', 'path');
589 $server = common_config('site', 'server');
591 if ($path && ($path != '/')) {
592 $cookiepath = '/' . $path . '/';
596 return setcookie($key,
603 define('REMEMBERME', 'rememberme');
604 define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60); # 30 days
606 function common_rememberme($user=NULL) {
608 $user = common_current_user();
610 common_debug('No current user to remember', __FILE__);
615 $rm = new Remember_me();
617 $rm->code = common_good_rand(16);
618 $rm->user_id = $user->id;
620 # Wrap the insert in some good ol' fashioned transaction code
624 $result = $rm->insert();
627 common_log_db_error($rm, 'INSERT', __FILE__);
628 common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
632 $rm->query('COMMIT');
634 common_debug('Inserted rememberme record (' . $rm->code . ', ' . $rm->user_id . '); result = ' . $result . '.', __FILE__);
636 $cookieval = $rm->user_id . ':' . $rm->code;
638 common_log(LOG_INFO, 'adding rememberme cookie "' . $cookieval . '" for ' . $user->nickname);
640 common_set_cookie(REMEMBERME, $cookieval, time() + REMEMBERME_EXPIRY);
645 function common_remembered_user() {
649 $packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : NULL;
655 list($id, $code) = explode(':', $packed);
657 if (!$id || !$code) {
658 common_log(LOG_WARNING, 'Malformed rememberme cookie: ' . $packed);
663 $rm = Remember_me::staticGet($code);
666 common_log(LOG_WARNING, 'No such remember code: ' . $code);
671 if ($rm->user_id != $id) {
672 common_log(LOG_WARNING, 'Rememberme code for wrong user: ' . $rm->user_id . ' != ' . $id);
677 $user = User::staticGet($rm->user_id);
680 common_log(LOG_WARNING, 'No such user for rememberme: ' . $rm->user_id);
686 $result = $rm->delete();
689 common_log_db_error($rm, 'DELETE', __FILE__);
690 common_log(LOG_WARNING, 'Could not delete rememberme: ' . $code);
695 common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
697 common_set_user($user);
698 common_real_login(false);
700 # We issue a new cookie, so they can log in
701 # automatically again after this session
703 common_rememberme($user);
708 # must be called with a valid user!
710 function common_forgetme() {
711 common_set_cookie(REMEMBERME, '', 0);
714 # who is the current user?
715 function common_current_user() {
718 if ($_cur === false) {
720 if (isset($_REQUEST[session_name()]) || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
721 common_ensure_session();
722 $id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
724 $_cur = User::staticGet($id);
729 # that didn't work; try to remember; will init $_cur to NULL on failure
730 $_cur = common_remembered_user();
733 common_debug("Got User " . $_cur->nickname);
734 common_debug("Faking session on remembered user");
735 # XXX: Is this necessary?
736 $_SESSION['userid'] = $_cur->id;
743 # Logins that are 'remembered' aren't 'real' -- they're subject to
744 # cookie-stealing. So, we don't let them do certain things. New reg,
745 # OpenID, and password logins _are_ real.
747 function common_real_login($real=true) {
748 common_ensure_session();
749 $_SESSION['real_login'] = $real;
752 function common_is_real_login() {
753 return common_logged_in() && $_SESSION['real_login'];
756 # get canonical version of nickname for comparison
757 function common_canonical_nickname($nickname) {
758 # XXX: UTF-8 canonicalization (like combining chars)
759 return strtolower($nickname);
762 # get canonical version of email for comparison
763 function common_canonical_email($email) {
764 # XXX: canonicalize UTF-8
765 # XXX: lcase the domain part
769 define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
771 function common_render_content($text, $notice) {
772 $r = common_render_text($text);
773 $id = $notice->profile_id;
774 $r = preg_replace('/(^|\s+)@([A-Za-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
775 $r = preg_replace('/^T ([A-Z0-9]{1,64}) /e', "'T '.common_at_link($id, '\\1').' '", $r);
776 $r = preg_replace('/(^|\s+)@#([A-Za-z0-9]{1,64})/e', "'\\1@#'.common_at_hash_link($id, '\\2')", $r);
780 function common_render_text($text) {
781 $r = htmlspecialchars($text);
783 $r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
784 $r = preg_replace_callback('@https?://[^\]>\s]+@', 'common_render_uri_thingy', $r);
785 $r = preg_replace('/(^|\s+)#([A-Za-z0-9_\-\.]{1,64})/e', "'\\1#'.common_tag_link('\\2')", $r);
790 function common_render_uri_thingy($matches) {
794 # Some heuristics for extracting URIs from surrounding punctuation
795 # Strip from trailing text...
796 if (preg_match('/^(.*)([,.:"\']+)$/', $uri, $matches)) {
798 $trailer = $matches[2];
802 ']' => '[', # technically disallowed in URIs, but used in Java docs
803 ')' => '(', # far too frequent in Wikipedia and MSDN
805 $final = substr($uri, -1, 1);
806 if (isset($pairs[$final])) {
807 $openers = substr_count($uri, $pairs[$final]);
808 $closers = substr_count($uri, $final);
809 if ($closers > $openers) {
810 // Assume the paren was opened outside the URI
811 $uri = substr($uri, 0, -1);
812 $trailer = $final . $trailer;
815 if ($longurl = common_longurl($uri)) {
816 $longurl = htmlentities($longurl, ENT_QUOTES, 'UTF-8');
817 $title = " title='$longurl'";
821 return '<a href="' . $uri . '"' . $title . ' class="extlink">' . $uri . '</a>' . $trailer;
824 function common_longurl($short_url) {
825 $long_url = common_shorten_link($short_url, true);
826 if ($long_url === $short_url) return false;
830 function common_longurl2($uri) {
831 $uri_e = urlencode($uri);
832 $longurl = unserialize(file_get_contents("http://api.longurl.org/v1/expand?format=php&url=$uri_e"));
833 if (empty($longurl['long_url']) || $uri === $longurl['long_url']) return false;
834 return stripslashes($longurl['long_url']);
837 function common_shorten_links($text) {
838 if (mb_strlen($text) <= 140) return $text;
839 static $cache = array();
840 if (isset($cache[$text])) return $cache[$text];
841 // \s = not a horizontal whitespace character (since PHP 5.2.4)
842 return $cache[$text] = preg_replace('@https?://[^)\]>\s]+@e', "common_shorten_link('\\0')", $text);
845 function common_shorten_link($url, $reverse = false) {
846 static $url_cache = array();
847 if ($reverse) return isset($url_cache[$url]) ? $url_cache[$url] : $url;
849 $user = common_current_user();
851 $curlh = curl_init();
852 curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 20); // # seconds to wait
853 curl_setopt($curlh, CURLOPT_USERAGENT, 'Laconica');
854 curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
856 switch($user->urlshorteningservice) {
858 $short_url_service = new LilUrl;
859 $short_url = $short_url_service->shorten($url);
863 $short_url_service = new TightUrl;
864 $short_url = $short_url_service->shorten($url);
868 $short_url_service = new PtitUrl;
869 $short_url = $short_url_service->shorten($url);
873 curl_setopt($curlh, CURLOPT_URL, 'http://bit.ly/api?method=shorten&long_url='.urlencode($url));
874 $short_url = current(json_decode(curl_exec($curlh))->results)->hashUrl;
878 curl_setopt($curlh, CURLOPT_URL, 'http://is.gd/api.php?longurl='.urlencode($url));
879 $short_url = curl_exec($curlh);
882 curl_setopt($curlh, CURLOPT_URL, 'http://snipr.com/site/snip?r=simple&link='.urlencode($url));
883 $short_url = curl_exec($curlh);
886 curl_setopt($curlh, CURLOPT_URL, 'http://metamark.net/api/rest/simple?long_url='.urlencode($url));
887 $short_url = curl_exec($curlh);
890 curl_setopt($curlh, CURLOPT_URL, 'http://tinyurl.com/api-create.php?url='.urlencode($url));
891 $short_url = curl_exec($curlh);
900 $url_cache[(string)$short_url] = $url;
901 return (string)$short_url;
906 function common_xml_safe_str($str) {
907 $xmlStr = htmlentities(iconv('UTF-8', 'UTF-8//IGNORE', $str), ENT_NOQUOTES, 'UTF-8');
909 // Replace control, formatting, and surrogate characters with '*', ala Twitter
910 return preg_replace('/[\p{Cc}\p{Cf}\p{Cs}]/u', '*', $str);
913 function common_tag_link($tag) {
914 $canonical = common_canonical_tag($tag);
915 $url = common_local_url('tag', array('tag' => $canonical));
916 return '<a href="' . htmlspecialchars($url) . '" rel="tag" class="hashlink">' . htmlspecialchars($tag) . '</a>';
919 function common_canonical_tag($tag) {
920 return strtolower(str_replace(array('-', '_', '.'), '', $tag));
923 function common_valid_profile_tag($str) {
924 return preg_match('/^[A-Za-z0-9_\-\.]{1,64}$/', $str);
927 function common_at_link($sender_id, $nickname) {
928 $sender = Profile::staticGet($sender_id);
929 $recipient = common_relative_profile($sender, common_canonical_nickname($nickname));
931 return '<span class="vcard"><a class="fn nickname url" rel="reply" href="'.htmlspecialchars($recipient->profileurl).'" class="atlink">'.$nickname.'</a></span>';
933 return '<span class="vcard"> <span class="fn nickname">'.$nickname.'</span> </span>';
937 function common_at_hash_link($sender_id, $tag) {
938 $user = User::staticGet($sender_id);
942 $tagged = Profile_tag::getTagged($user->id, common_canonical_tag($tag));
944 $url = common_local_url('subscriptions',
945 array('nickname' => $user->nickname,
947 return '<a href="'.htmlspecialchars($url).'" class="atlink">'.$tag.'</a>';
953 function common_relative_profile($sender, $nickname, $dt=NULL) {
954 # Try to find profiles this profile is subscribed to that have this nickname
955 $recipient = new Profile();
956 # XXX: use a join instead of a subquery
957 $recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender->id.' and subscribed = id)', 'AND');
958 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
959 if ($recipient->find(TRUE)) {
960 # XXX: should probably differentiate between profiles with
961 # the same name by date of most recent update
964 # Try to find profiles that listen to this profile and that have this nickname
965 $recipient = new Profile();
966 # XXX: use a join instead of a subquery
967 $recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender->id.' and subscriber = id)', 'AND');
968 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
969 if ($recipient->find(TRUE)) {
970 # XXX: should probably differentiate between profiles with
971 # the same name by date of most recent update
974 # If this is a local user, try to find a local user with that nickname.
975 $sender = User::staticGet($sender->id);
977 $recipient_user = User::staticGet('nickname', $nickname);
978 if ($recipient_user) {
979 return $recipient_user->getProfile();
982 # Otherwise, no links. @messages from local users to remote users,
983 # or from remote users to other remote users, are just
984 # outside our ability to make intelligent guesses about
988 // where should the avatar go for this user?
990 function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
994 return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
996 return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
1000 function common_avatar_path($filename) {
1002 return INSTALLDIR . '/avatar/' . $filename;
1005 function common_avatar_url($filename) {
1006 return common_path('avatar/'.$filename);
1009 function common_avatar_display_url($avatar) {
1010 $server = common_config('avatar', 'server');
1012 return 'http://'.$server.'/'.$avatar->filename;
1014 return $avatar->url;
1018 function common_default_avatar($size) {
1019 static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
1020 AVATAR_STREAM_SIZE => 'stream',
1021 AVATAR_MINI_SIZE => 'mini');
1022 return theme_path('default-avatar-'.$sizenames[$size].'.png');
1025 function common_local_url($action, $args=NULL, $fragment=NULL) {
1027 if (common_config('site','fancy')) {
1028 $url = common_fancy_url($action, $args);
1030 $url = common_simple_url($action, $args);
1032 if (!is_null($fragment)) {
1033 $url .= '#'.$fragment;
1038 function common_fancy_url($action, $args=NULL) {
1039 switch (strtolower($action)) {
1041 if ($args && isset($args['page'])) {
1042 return common_path('?page=' . $args['page']);
1044 return common_path('');
1047 if ($args && isset($args['page'])) {
1048 return common_path('featured?page=' . $args['page']);
1050 return common_path('featured');
1053 if ($args && isset($args['page'])) {
1054 return common_path('favorited?page=' . $args['page']);
1056 return common_path('favorited');
1059 return common_path('rss');
1061 return common_path('xrds');
1063 return common_path('featuredrss');
1064 case 'favoritedrss':
1065 return common_path('favoritedrss');
1067 if ($args && $args['type']) {
1068 return common_path('opensearch/'.$args['type']);
1070 return common_path('opensearch/people');
1073 return common_path('doc/'.$args['title']);
1079 return common_path('main/'.$action);
1081 return common_path('main/tagother?id='.$args['id']);
1083 if ($args && $args['code']) {
1084 return common_path('main/register/'.$args['code']);
1086 return common_path('main/register');
1088 case 'remotesubscribe':
1089 if ($args && $args['nickname']) {
1090 return common_path('main/remote?nickname=' . $args['nickname']);
1092 return common_path('main/remote');
1095 return common_path($args['nickname'].'/nudge');
1097 return common_path('main/openid');
1098 case 'profilesettings':
1099 return common_path('settings/profile');
1100 case 'emailsettings':
1101 return common_path('settings/email');
1102 case 'openidsettings':
1103 return common_path('settings/openid');
1105 return common_path('settings/sms');
1106 case 'twittersettings':
1107 return common_path('settings/twitter');
1108 case 'othersettings':
1109 return common_path('settings/other');
1111 if ($args && $args['replyto']) {
1112 return common_path('notice/new?replyto='.$args['replyto']);
1114 return common_path('notice/new');
1117 return common_path('notice/'.$args['notice']);
1118 case 'deletenotice':
1119 if ($args && $args['notice']) {
1120 return common_path('notice/delete/'.$args['notice']);
1122 return common_path('notice/delete');
1124 case 'microsummary':
1127 return common_path($args['nickname'].'/'.$action);
1132 if ($args && isset($args['page'])) {
1133 return common_path($args['nickname'].'/'.$action.'?page=' . $args['page']);
1135 return common_path($args['nickname'].'/'.$action);
1137 case 'subscriptions':
1139 $nickname = $args['nickname'];
1140 unset($args['nickname']);
1141 if (isset($args['tag'])) {
1142 $tag = $args['tag'];
1143 unset($args['tag']);
1145 $params = http_build_query($args);
1147 return common_path($nickname.'/'.$action . (($tag) ? '/' . $tag : '') . '?' . $params);
1149 return common_path($nickname.'/'.$action . (($tag) ? '/' . $tag : ''));
1152 return common_path($args['nickname'].'/all/rss');
1154 return common_path($args['nickname'].'/replies/rss');
1156 if (isset($args['limit']))
1157 return common_path($args['nickname'].'/rss?limit=' . $args['limit']);
1158 return common_path($args['nickname'].'/rss');
1160 if ($args && isset($args['page'])) {
1161 return common_path($args['nickname'].'?page=' . $args['page']);
1163 return common_path($args['nickname']);
1166 case 'usertimeline':
1167 return common_path("api/statuses/user_timeline/".$args['nickname'].".atom");
1168 case 'confirmaddress':
1169 return common_path('main/confirmaddress/'.$args['code']);
1171 return common_path('user/'.$args['id']);
1172 case 'recoverpassword':
1173 $path = 'main/recoverpassword';
1174 if ($args['code']) {
1175 $path .= '/' . $args['code'];
1177 return common_path($path);
1179 return common_path('settings/im');
1180 case 'peoplesearch':
1181 return common_path('search/people' . (($args) ? ('?' . http_build_query($args)) : ''));
1182 case 'noticesearch':
1183 return common_path('search/notice' . (($args) ? ('?' . http_build_query($args)) : ''));
1184 case 'noticesearchrss':
1185 return common_path('search/notice/rss' . (($args) ? ('?' . http_build_query($args)) : ''));
1186 case 'avatarbynickname':
1187 return common_path($args['nickname'].'/avatar/'.$args['size']);
1189 if (isset($args['tag']) && $args['tag']) {
1190 $path = 'tag/' . $args['tag'];
1191 unset($args['tag']);
1195 return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
1197 $path = 'peopletag/' . $args['tag'];
1198 unset($args['tag']);
1199 return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
1201 return common_path('tags' . (($args) ? ('?' . http_build_query($args)) : ''));
1203 return common_path('main/favor');
1205 return common_path('main/disfavor');
1206 case 'showfavorites':
1207 if ($args && isset($args['page'])) {
1208 return common_path($args['nickname'].'/favorites?page=' . $args['page']);
1210 return common_path($args['nickname'].'/favorites');
1212 case 'favoritesrss':
1213 return common_path($args['nickname'].'/favorites/rss');
1215 return common_path('message/' . $args['message']);
1217 return common_path('message/new' . (($args) ? ('?' . http_build_query($args)) : ''));
1219 # XXX: do fancy URLs for all the API methods
1220 switch (strtolower($args['apiaction'])) {
1222 switch (strtolower($args['method'])) {
1223 case 'user_timeline.rss':
1224 return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
1225 case 'user_timeline.atom':
1226 return common_path('api/statuses/user_timeline/'.$args['argument'].'.atom');
1227 case 'user_timeline.json':
1228 return common_path('api/statuses/user_timeline/'.$args['argument'].'.json');
1229 case 'user_timeline.xml':
1230 return common_path('api/statuses/user_timeline/'.$args['argument'].'.xml');
1231 default: return common_simple_url($action, $args);
1233 default: return common_simple_url($action, $args);
1236 if ($args && isset($args['seconds'])) {
1237 return common_path('main/sup?seconds='.$args['seconds']);
1239 return common_path('main/sup');
1242 return common_simple_url($action, $args);
1246 function common_simple_url($action, $args=NULL) {
1248 /* XXX: pretty URLs */
1251 foreach ($args as $key => $value) {
1252 $extra .= "&${key}=${value}";
1255 return common_path("index.php?action=${action}${extra}");
1258 function common_path($relative) {
1260 $pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
1261 return "http://".$config['site']['server'].'/'.$pathpart.$relative;
1264 function common_date_string($dt) {
1265 // XXX: do some sexy date formatting
1266 // return date(DATE_RFC822, $dt);
1267 $t = strtotime($dt);
1271 if ($now < $t) { # that shouldn't happen!
1272 return common_exact_date($dt);
1273 } else if ($diff < 60) {
1274 return _('a few seconds ago');
1275 } else if ($diff < 92) {
1276 return _('about a minute ago');
1277 } else if ($diff < 3300) {
1278 return sprintf(_('about %d minutes ago'), round($diff/60));
1279 } else if ($diff < 5400) {
1280 return _('about an hour ago');
1281 } else if ($diff < 22 * 3600) {
1282 return sprintf(_('about %d hours ago'), round($diff/3600));
1283 } else if ($diff < 37 * 3600) {
1284 return _('about a day ago');
1285 } else if ($diff < 24 * 24 * 3600) {
1286 return sprintf(_('about %d days ago'), round($diff/(24*3600)));
1287 } else if ($diff < 46 * 24 * 3600) {
1288 return _('about a month ago');
1289 } else if ($diff < 330 * 24 * 3600) {
1290 return sprintf(_('about %d months ago'), round($diff/(30*24*3600)));
1291 } else if ($diff < 480 * 24 * 3600) {
1292 return _('about a year ago');
1294 return common_exact_date($dt);
1298 function common_exact_date($dt) {
1303 $_utc = new DateTimeZone('UTC');
1304 $_siteTz = new DateTimeZone(common_timezone());
1307 $dateStr = date('d F Y H:i:s', strtotime($dt));
1308 $d = new DateTime($dateStr, $_utc);
1309 $d->setTimezone($_siteTz);
1310 return $d->format(DATE_RFC850);
1313 function common_date_w3dtf($dt) {
1314 $dateStr = date('d F Y H:i:s', strtotime($dt));
1315 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1316 $d->setTimezone(new DateTimeZone(common_timezone()));
1317 return $d->format(DATE_W3C);
1320 function common_date_rfc2822($dt) {
1321 $dateStr = date('d F Y H:i:s', strtotime($dt));
1322 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1323 $d->setTimezone(new DateTimeZone(common_timezone()));
1324 return $d->format('r');
1327 function common_date_iso8601($dt) {
1328 $dateStr = date('d F Y H:i:s', strtotime($dt));
1329 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1330 $d->setTimezone(new DateTimeZone(common_timezone()));
1331 return $d->format('c');
1334 function common_sql_now() {
1335 return strftime('%Y-%m-%d %H:%M:%S', time());
1338 function common_redirect($url, $code=307) {
1339 static $status = array(301 => "Moved Permanently",
1342 307 => "Temporary Redirect");
1343 header("Status: ${code} $status[$code]");
1344 header("Location: $url");
1346 common_start_xml('a',
1347 '-//W3C//DTD XHTML 1.0 Strict//EN',
1348 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
1349 common_element('a', array('href' => $url), $url);
1354 function common_save_replies($notice) {
1355 # Alternative reply format
1357 if (preg_match('/^T ([A-Z0-9]{1,64}) /', $notice->content, $match)) {
1360 # extract all @messages
1361 $cnt = preg_match_all('/(?:^|\s)@([a-z0-9]{1,64})/', $notice->content, $match);
1365 if ($cnt || $tname) {
1366 # XXX: is there another way to make an array copy?
1367 $names = ($tname) ? array_unique(array_merge(array(strtolower($tname)), $match[1])) : array_unique($match[1]);
1370 $sender = Profile::staticGet($notice->profile_id);
1374 # store replied only for first @ (what user/notice what the reply directed,
1375 # we assume first @ is it)
1377 for ($i=0; $i<count($names); $i++) {
1378 $nickname = $names[$i];
1379 $recipient = common_relative_profile($sender, $nickname, $notice->created);
1383 if ($i == 0 && ($recipient->id != $sender->id) && !$notice->reply_to) { # Don't save reply to self
1384 $reply_for = $recipient;
1385 $recipient_notice = $reply_for->getCurrentNotice();
1386 if ($recipient_notice) {
1387 $orig = clone($notice);
1388 $notice->reply_to = $recipient_notice->id;
1389 $notice->update($orig);
1392 $reply = new Reply();
1393 $reply->notice_id = $notice->id;
1394 $reply->profile_id = $recipient->id;
1395 $id = $reply->insert();
1397 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1398 common_log(LOG_ERR, 'DB error inserting reply: ' . $last_error->message);
1399 common_server_error(sprintf(_('DB error inserting reply: %s'), $last_error->message));
1402 $replied[$recipient->id] = 1;
1406 # Hash format replies, too
1407 $cnt = preg_match_all('/(?:^|\s)@#([a-z0-9]{1,64})/', $notice->content, $match);
1409 foreach ($match[1] as $tag) {
1410 $tagged = Profile_tag::getTagged($sender->id, $tag);
1411 foreach ($tagged as $t) {
1412 if (!$replied[$t->id]) {
1413 $reply = new Reply();
1414 $reply->notice_id = $notice->id;
1415 $reply->profile_id = $t->id;
1416 $id = $reply->insert();
1418 common_log_db_error($reply, 'INSERT', __FILE__);
1427 function common_broadcast_notice($notice, $remote=false) {
1429 // Check to see if notice should go to Twitter
1430 $flink = Foreign_link::getByUserID($notice->profile_id, 1); // 1 == Twitter
1431 if (($flink->noticesync & FOREIGN_NOTICE_SEND) == FOREIGN_NOTICE_SEND) {
1433 // If it's not a Twitter-style reply, or if the user WANTS to send replies...
1435 if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
1436 (($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY) == FOREIGN_NOTICE_SEND_REPLY)) {
1438 $result = common_twitter_broadcast($notice, $flink);
1441 common_debug('Unable to send notice: ' . $notice->id . ' to Twitter.', __FILE__);
1446 if (common_config('queue', 'enabled')) {
1448 return common_enqueue_notice($notice);
1450 return common_real_broadcast($notice, $remote);
1454 function common_twitter_broadcast($notice, $flink) {
1457 $fuser = $flink->getForeignUser();
1458 $twitter_user = $fuser->nickname;
1459 $twitter_password = $flink->credentials;
1460 $uri = 'http://www.twitter.com/statuses/update.json';
1462 // XXX: Hack to get around PHP cURL's use of @ being a a meta character
1463 $statustxt = preg_replace('/^@/', ' @', $notice->content);
1466 CURLOPT_USERPWD => "$twitter_user:$twitter_password",
1467 CURLOPT_POST => true,
1468 CURLOPT_POSTFIELDS => array(
1469 'status' => $statustxt,
1470 'source' => $config['integration']['source']
1472 CURLOPT_RETURNTRANSFER => true,
1473 CURLOPT_FAILONERROR => true,
1474 CURLOPT_HEADER => false,
1475 CURLOPT_FOLLOWLOCATION => true,
1476 CURLOPT_USERAGENT => "Laconica",
1477 CURLOPT_CONNECTTIMEOUT => 120, // XXX: Scary!!!! How long should this be?
1478 CURLOPT_TIMEOUT => 120
1481 $ch = curl_init($uri);
1482 curl_setopt_array($ch, $options);
1483 $data = curl_exec($ch);
1484 $errmsg = curl_error($ch);
1487 common_debug("cURL error: $errmsg - trying to send notice for $twitter_user.",
1495 common_debug("No data returned by Twitter's API trying to send update for $twitter_user",
1500 // Twitter should return a status
1501 $status = json_decode($data);
1504 common_debug("Unexpected data returned by Twitter API trying to send update for $twitter_user",
1512 # Stick the notice on the queue
1514 function common_enqueue_notice($notice) {
1515 foreach (array('jabber', 'omb', 'sms', 'public') as $transport) {
1516 $qi = new Queue_item();
1517 $qi->notice_id = $notice->id;
1518 $qi->transport = $transport;
1519 $qi->created = $notice->created;
1520 $result = $qi->insert();
1522 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1523 common_log(LOG_ERR, 'DB error inserting queue item: ' . $last_error->message);
1526 common_log(LOG_DEBUG, 'complete queueing notice ID = ' . $notice->id . ' for ' . $transport);
1531 function common_dequeue_notice($notice) {
1532 $qi = Queue_item::staticGet($notice->id);
1534 $result = $qi->delete();
1536 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1537 common_log(LOG_ERR, 'DB error deleting queue item: ' . $last_error->message);
1540 common_log(LOG_DEBUG, 'complete dequeueing notice ID = ' . $notice->id);
1547 function common_real_broadcast($notice, $remote=false) {
1550 # Make sure we have the OMB stuff
1551 require_once(INSTALLDIR.'/lib/omb.php');
1552 $success = omb_broadcast_remote_subscribers($notice);
1554 common_log(LOG_ERR, 'Error in OMB broadcast for notice ' . $notice->id);
1558 require_once(INSTALLDIR.'/lib/jabber.php');
1559 $success = jabber_broadcast_notice($notice);
1561 common_log(LOG_ERR, 'Error in jabber broadcast for notice ' . $notice->id);
1565 require_once(INSTALLDIR.'/lib/mail.php');
1566 $success = mail_broadcast_notice_sms($notice);
1568 common_log(LOG_ERR, 'Error in sms broadcast for notice ' . $notice->id);
1572 $success = jabber_public_notice($notice);
1574 common_log(LOG_ERR, 'Error in public broadcast for notice ' . $notice->id);
1577 // XXX: broadcast notices to other IM
1581 function common_broadcast_profile($profile) {
1582 // XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
1583 require_once(INSTALLDIR.'/lib/omb.php');
1584 omb_broadcast_profile($profile);
1585 // XXX: Other broadcasts...?
1589 function common_profile_url($nickname) {
1590 return common_local_url('showstream', array('nickname' => $nickname));
1593 # Don't call if nobody's logged in
1595 function common_notice_form($action=NULL, $content=NULL) {
1596 $user = common_current_user();
1597 assert(!is_null($user));
1598 common_element_start('form', array('id' => 'status_form',
1600 'action' => common_local_url('newnotice')));
1601 common_element_start('p');
1602 common_element('label', array('for' => 'status_textarea',
1603 'id' => 'status_label'),
1604 sprintf(_('What\'s up, %s?'), $user->nickname));
1605 common_element('span', array('id' => 'counter', 'class' => 'counter'), '140');
1606 common_element('textarea', array('id' => 'status_textarea',
1609 'name' => 'status_textarea'),
1610 ($content) ? $content : '');
1611 common_hidden('token', common_session_token());
1613 common_hidden('returnto', $action);
1616 common_hidden('inreplyto', 'false');
1617 common_element('input', array('id' => 'status_submit',
1618 'name' => 'status_submit',
1620 'value' => _('Send')));
1621 common_element_end('p');
1622 common_element_end('form');
1625 # Should make up a reasonable root URL
1627 function common_root_url() {
1628 return common_path('');
1631 # returns $bytes bytes of random data as a hexadecimal string
1632 # "good" here is a goal and not a guarantee
1634 function common_good_rand($bytes) {
1635 # XXX: use random.org...?
1636 if (file_exists('/dev/urandom')) {
1637 return common_urandom($bytes);
1638 } else { # FIXME: this is probably not good enough
1639 return common_mtrand($bytes);
1643 function common_urandom($bytes) {
1644 $h = fopen('/dev/urandom', 'rb');
1646 $src = fread($h, $bytes);
1649 for ($i = 0; $i < $bytes; $i++) {
1650 $enc .= sprintf("%02x", (ord($src[$i])));
1655 function common_mtrand($bytes) {
1657 for ($i = 0; $i < $bytes; $i++) {
1658 $enc .= sprintf("%02x", mt_rand(0, 255));
1663 function common_set_returnto($url) {
1664 common_ensure_session();
1665 $_SESSION['returnto'] = $url;
1668 function common_get_returnto() {
1669 common_ensure_session();
1670 return $_SESSION['returnto'];
1673 function common_timestamp() {
1674 return date('YmdHis');
1677 function common_ensure_syslog() {
1678 static $initialized = false;
1679 if (!$initialized) {
1681 openlog($config['syslog']['appname'], 0, LOG_USER);
1682 $initialized = true;
1686 function common_log($priority, $msg, $filename=NULL) {
1687 $logfile = common_config('site', 'logfile');
1689 $log = fopen($logfile, "a");
1691 static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
1692 'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
1693 $output = date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . "\n";
1694 fwrite($log, $output);
1698 common_ensure_syslog();
1699 syslog($priority, $msg);
1703 function common_debug($msg, $filename=NULL) {
1705 common_log(LOG_DEBUG, basename($filename).' - '.$msg);
1707 common_log(LOG_DEBUG, $msg);
1711 function common_log_db_error(&$object, $verb, $filename=NULL) {
1712 $objstr = common_log_objstring($object);
1713 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1714 common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
1717 function common_log_objstring(&$object) {
1718 if (is_null($object)) {
1721 $arr = $object->toArray();
1723 foreach ($arr as $k => $v) {
1724 $fields[] = "$k='$v'";
1726 $objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
1730 function common_valid_http_url($url) {
1731 return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
1734 function common_valid_tag($tag) {
1735 if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
1736 return (Validate::email($matches[1]) ||
1737 preg_match('/^([\w-\.]+)$/', $matches[1]));
1742 # Does a little before-after block for next/prev page
1744 function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
1746 if ($have_before || $have_after) {
1747 common_element_start('div', array('id' => 'pagination'));
1748 common_element_start('ul', array('id' => 'nav_pagination'));
1752 $pargs = array('page' => $page-1);
1753 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1755 common_element_start('li', 'before');
1756 common_element('a', array('href' => common_local_url($action, $newargs), 'rel' => 'prev'),
1758 common_element_end('li');
1762 $pargs = array('page' => $page+1);
1763 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1764 common_element_start('li', 'after');
1765 common_element('a', array('href' => common_local_url($action, $newargs), 'rel' => 'next'),
1767 common_element_end('li');
1770 if ($have_before || $have_after) {
1771 common_element_end('ul');
1772 common_element_end('div');
1776 /* Following functions are copied from MediaWiki GlobalFunctions.php
1777 * and written by Evan Prodromou. */
1779 function common_accept_to_prefs($accept, $def = '*/*') {
1780 # No arg means accept anything (per HTTP spec)
1782 return array($def => 1);
1787 $parts = explode(',', $accept);
1789 foreach($parts as $part) {
1790 # FIXME: doesn't deal with params like 'text/html; level=1'
1791 @list($value, $qpart) = explode(';', $part);
1793 if(!isset($qpart)) {
1795 } elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
1796 $prefs[$value] = $match[1];
1803 function common_mime_type_match($type, $avail) {
1804 if(array_key_exists($type, $avail)) {
1807 $parts = explode('/', $type);
1808 if(array_key_exists($parts[0] . '/*', $avail)) {
1809 return $parts[0] . '/*';
1810 } elseif(array_key_exists('*/*', $avail)) {
1818 function common_negotiate_type($cprefs, $sprefs) {
1821 foreach(array_keys($sprefs) as $type) {
1822 $parts = explode('/', $type);
1823 if($parts[1] != '*') {
1824 $ckey = common_mime_type_match($type, $cprefs);
1826 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1831 foreach(array_keys($cprefs) as $type) {
1832 $parts = explode('/', $type);
1833 if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
1834 $skey = common_mime_type_match($type, $sprefs);
1836 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1842 $besttype = "text/html";
1844 foreach(array_keys($combine) as $type) {
1845 if($combine[$type] > $bestq) {
1847 $bestq = $combine[$type];
1854 function common_config($main, $sub) {
1856 return isset($config[$main][$sub]) ? $config[$main][$sub] : false;
1859 function common_copy_args($from) {
1861 $strip = get_magic_quotes_gpc();
1862 foreach ($from as $k => $v) {
1863 $to[$k] = ($strip) ? stripslashes($v) : $v;
1868 // Neutralise the evil effects of magic_quotes_gpc in the current request.
1869 // This is used before handing a request off to OAuthRequest::from_request.
1870 function common_remove_magic_from_request() {
1871 if(get_magic_quotes_gpc()) {
1872 $_POST=array_map('stripslashes',$_POST);
1873 $_GET=array_map('stripslashes',$_GET);
1877 function common_user_uri(&$user) {
1878 return common_local_url('userbyid', array('id' => $user->id));
1881 function common_notice_uri(&$notice) {
1882 return common_local_url('shownotice',
1883 array('notice' => $notice->id));
1886 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1888 function common_confirmation_code($bits) {
1889 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1890 static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
1891 $chars = ceil($bits/5);
1893 for ($i = 0; $i < $chars; $i++) {
1894 # XXX: convert to string and back
1895 $num = hexdec(common_good_rand(1));
1896 # XXX: randomness is too precious to throw away almost
1897 # 40% of the bits we get!
1898 $code .= $codechars[$num%32];
1903 # convert markup to HTML
1905 function common_markup_to_html($c) {
1906 $c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
1907 $c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
1908 $c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
1909 return Markdown($c);
1912 function common_profile_avatar_url($profile, $size=AVATAR_PROFILE_SIZE) {
1913 $avatar = $profile->getAvatar($size);
1915 return common_avatar_display_url($avatar);
1917 return common_default_avatar($size);
1921 function common_profile_uri($profile) {
1925 $user = User::staticGet($profile->id);
1930 $remote = Remote_profile::staticGet($profile->id);
1932 return $remote->uri;
1934 # XXX: this is a very bad profile!
1938 function common_canonical_sms($sms) {
1940 preg_replace('/\D/', '', $sms);
1944 function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext) {
1947 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline)");
1951 case E_USER_WARNING:
1952 common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
1956 common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
1960 # FIXME: show error page if we're on the Web
1961 /* Don't execute PHP internal error handler */
1965 function common_session_token() {
1966 common_ensure_session();
1967 if (!array_key_exists('token', $_SESSION)) {
1968 $_SESSION['token'] = common_good_rand(64);
1970 return $_SESSION['token'];
1973 function common_disfavor_form($notice) {
1974 common_element_start('form', array('id' => 'disfavor-' . $notice->id,
1976 'class' => 'disfavor',
1977 'action' => common_local_url('disfavor')));
1979 common_element('input', array('type' => 'hidden',
1980 'name' => 'token-'. $notice->id,
1981 'id' => 'token-'. $notice->id,
1983 'value' => common_session_token()));
1985 common_element('input', array('type' => 'hidden',
1987 'id' => 'notice-n'. $notice->id,
1988 'class' => 'notice',
1989 'value' => $notice->id));
1991 common_element('input', array('type' => 'submit',
1992 'id' => 'disfavor-submit-' . $notice->id,
1993 'name' => 'disfavor-submit-' . $notice->id,
1994 'class' => 'disfavor',
1995 'value' => 'Disfavor favorite',
1996 'title' => 'Remove this message from favorites'));
1997 common_element_end('form');
2000 function common_favor_form($notice) {
2001 common_element_start('form', array('id' => 'favor-' . $notice->id,
2004 'action' => common_local_url('favor')));
2006 common_element('input', array('type' => 'hidden',
2007 'name' => 'token-'. $notice->id,
2008 'id' => 'token-'. $notice->id,
2010 'value' => common_session_token()));
2012 common_element('input', array('type' => 'hidden',
2014 'id' => 'notice-n'. $notice->id,
2015 'class' => 'notice',
2016 'value' => $notice->id));
2018 common_element('input', array('type' => 'submit',
2019 'id' => 'favor-submit-' . $notice->id,
2020 'name' => 'favor-submit-' . $notice->id,
2022 'value' => 'Add to favorites',
2023 'title' => 'Add this message to favorites'));
2024 common_element_end('form');
2027 function common_nudge_form($profile) {
2028 common_element_start('form', array('id' => 'nudge', 'method' => 'post',
2029 'action' => common_local_url('nudge', array('nickname' => $profile->nickname))));
2030 common_hidden('token', common_session_token());
2031 common_element('input', array('type' => 'submit',
2032 'class' => 'submit',
2033 'value' => _('Send a nudge')));
2034 common_element_end('form');
2036 function common_nudge_response() {
2037 common_element('p', array('id' => 'nudge_response'), _('Nudge sent!'));
2040 function common_subscribe_form($profile) {
2041 common_element_start('form', array('id' => 'subscribe-' . $profile->nickname,
2043 'class' => 'subscribe',
2044 'action' => common_local_url('subscribe')));
2045 common_hidden('token', common_session_token());
2046 common_element('input', array('id' => 'subscribeto-' . $profile->nickname,
2047 'name' => 'subscribeto',
2049 'value' => $profile->nickname));
2050 common_element('input', array('type' => 'submit',
2051 'class' => 'submit',
2052 'value' => _('Subscribe')));
2053 common_element_end('form');
2056 function common_unsubscribe_form($profile) {
2057 common_element_start('form', array('id' => 'unsubscribe-' . $profile->nickname,
2059 'class' => 'unsubscribe',
2060 'action' => common_local_url('unsubscribe')));
2061 common_hidden('token', common_session_token());
2062 common_element('input', array('id' => 'unsubscribeto-' . $profile->nickname,
2063 'name' => 'unsubscribeto',
2065 'value' => $profile->nickname));
2066 common_element('input', array('type' => 'submit',
2067 'class' => 'submit',
2068 'value' => _('Unsubscribe')));
2069 common_element_end('form');
2072 // XXX: Refactor this code
2073 function common_profile_new_message_nudge ($cur, $profile) {
2074 $user = User::staticGet('id', $profile->id);
2076 if ($cur && $cur->id != $user->id && $cur->mutuallySubscribed($user)) {
2077 common_element_start('li', array('id' => 'profile_send_a_new_message'));
2078 common_element('a', array('href' => common_local_url('newmessage', array('to' => $user->id))),
2079 _('Send a message'));
2080 common_element_end('li');
2082 if ($user->email && $user->emailnotifynudge) {
2083 common_element_start('li', array('id' => 'profile_nudge'));
2084 common_nudge_form($user);
2085 common_element_end('li');
2090 function common_cache_key($extra) {
2091 return 'laconica:' . common_keyize(common_config('site', 'name')) . ':' . $extra;
2094 function common_keyize($str) {
2095 $str = strtolower($str);
2096 $str = preg_replace('/\s/', '_', $str);
2100 function common_message_form($content, $user, $to) {
2102 common_element_start('form', array('id' => 'message_form',
2104 'action' => common_local_url('newmessage')));
2106 $mutual_users = $user->mutuallySubscribedUsers();
2110 while ($mutual_users->fetch()) {
2111 if ($mutual_users->id != $user->id) {
2112 $mutual[$mutual_users->id] = $mutual_users->nickname;
2116 $mutual_users->free();
2117 unset($mutual_users);
2119 common_dropdown('to', _('To'), $mutual, NULL, FALSE, $to->id);
2121 common_element_start('p');
2123 common_element('textarea', array('id' => 'message_content',
2126 'name' => 'content'),
2127 ($content) ? $content : '');
2129 common_element('input', array('id' => 'message_send',
2130 'name' => 'message_send',
2132 'value' => _('Send')));
2134 common_hidden('token', common_session_token());
2136 common_element_end('p');
2137 common_element_end('form');
2140 function common_memcache() {
2141 static $cache = NULL;
2142 if (!common_config('memcached', 'enabled')) {
2146 $cache = new Memcache();
2147 $servers = common_config('memcached', 'server');
2148 if (is_array($servers)) {
2149 foreach($servers as $server) {
2150 $cache->addServer($server);
2153 $cache->addServer($servers);
2160 function common_compatible_license($from, $to) {
2161 # XXX: better compatibility check needed here!
2162 return ($from == $to);